Adjustable scarifier tooth



June 6, 1939. J, R GQDFREY '2,160,964

ADJUSTABLE SCARIFIER TOOTH Filed April 20, 1938 Patented June 6, 1939 UNITED STATES PATENT OFFIQE 2 Claims.

'I'he present invention relates to an adjustable scarier tooth and embodies means for locking the tooth in vertically adjusted position in` its supporting frame.

More specifically, the present invention embodies a scarifying tooth having means adjacent its inner end for adjustably supporting the tooth in vertically adjusted position, said adjustable supporting means embodying a pin adapted for positioning adjacent the upper end of the supporting brackets when the tooth is initially positioned therein and after the tooth has become worn and reduced in length, to support the pin at a point adjacent the lower end of the bracket.

A further object is to provide an adjustable scarifying tooth and supporting bracket of substantially simple construction, which is strong 0 with an opening II for receiving a transversely and durable, which enables the convenient adjustment of the tooth when desired, and which at the same time is relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout, and in which- Figure 1 is a side elevational view of the supporting bracket showing the teeth supported adjacent the upper portion thereof, and with parts broken away and shown in section.

Figure 2 is a similar view showing the tooth supported in the lower position in the bracket, and with parts broken away and shown in section, and

Figure 3 is a transverse sectional view.

Referring now to the drawing in detail, the numeral 5 designates a portion of the frame of a scarier within which the supporting tooth block or bracket 6 is suitably secured, the front edge of said bracket having a V-shaped groove 'I extending longitudinally thereof and Within which theV-shaped tooth 8 is seated, the lower edge of l the tooth 9 projecting below the lower edge of the bracket 6 as clearly illustrated in Figures 1 and 2 of the drawing The upper rear edge of the tooth 9 is formed with vertically spaced half-round notches I0 and the bracket 6, adjacent its upper edge is provided extending pin I2 adapted to selectively seat in the notches I0 of the tooth. The pin I2 is retained in position by a cotter key I3 or the like.

The notches I0 are formed in the tooth adjacent only its uper end and accordingly when the tooth has become worn and reduced to a length less than the lenth of the supporting bracket 6, the pin` I2 is removed from the opening I I in the upper end of the bracket and positioned in an opening I4 which extends through the opposite sides of a substantially U-shaped guide I5 secured adjacent the lower portion of the bracket by a rivet I 6. The opening I4 also extends through the bracket 6 for receiving the pin I2 to engage one of the notches I0 of the tooth when the latter is positioned in the. lower end of the bracket in the manner shown in Figure 2. Y

In this manner the tooth may be adjusted until the same has become worn to a relatively short size and without requiring the formation of the notches I0 throughout the entire length of the tooth. The opening I4 in. the opposite sides of the guide I5 serve to reinforce the lower opening in the bracket to prevent wear caused by pressure of the tooth on the pin I2.

It is believed the details of construction and manner of use of the device will be readily understood from the foregoing without further detailed explanation.

Having thus described the invention, what I y claim is:

1. In an adjustable scarier tooth, a supporting bracket arranged in upright position, a groove in one edge thereof, a scarier tooth seated in said groove, said bracket having a plurality of vertically spaced openings, a guide secured to the bracket and bridging the groove for retaining the tooth therein, vertically spaced notches in one edge of the tooth and a pin removably inserted in said openings and engaging one of the notches to secure the tooth in vertically adjusted position.

2. In a scarifier tooth support, a vertical bracket having a vertical grove in one edge, a guide adjacent the lower portion of the bracket, said bracket having an opening adjacent its upper end and also having an opening adjacent its lower portion, said guide having an opening registering with said last named opening in the bracket, all of said openings intersecting the groove, a scarier tooth positioned in said groove, notches in the upper portion of the tooth and a pin selectively positioned in said openings and engageable in said notches for securing the tooth in vertically adjusted position in the bracket.

JOSEPH R. GODFREY. 

